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Light microscopy of sections of amaranth seed. A,B) Sections stained with the Azan trichrome; C,D,E,F) unstained sections observed at fluorescence microscopy. ^, chalazal endosperm; +, peripheral endosperm; AM, apical meristem; C, cotyledon; EM, embryo axis; F, funicle; ME, micropylar endosperm; P, protective sheath; PS, perisperm; R, radicle; SC, seed coat; T, tegmen; TE, testa. Scale bars: A) 100 μm; B) 25 μm; C) 50 μm; D) 22 μm; E,F) 36 μm.
